diff options
Diffstat (limited to 'linux-core/i915_gem.c')
| -rw-r--r-- | linux-core/i915_gem.c | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/linux-core/i915_gem.c b/linux-core/i915_gem.c new file mode 100644 index 00000000..0685a1b9 --- /dev/null +++ b/linux-core/i915_gem.c @@ -0,0 +1,140 @@ +/* + * Copyright © 2008 Intel Corporation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + * + * Authors: + * Eric Anholt <eric@anholt.net> + * + */ + +#include "drmP.h" +#include "drm.h" +#include "i915_drm.h" +#include "i915_drv.h" + +int +i915_gem_init_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + drm_i915_private_t *dev_priv = dev->dev_private; + struct drm_i915_gem_init *args = data; + + if (args->gtt_start >= args->gtt_end || + (args->gtt_start & (PAGE_SIZE - 1)) != 0 || + (args->gtt_end & (PAGE_SIZE - 1)) != 0) + return -EINVAL; + + drm_memrange_init(&dev_priv->mm.gtt_space, args->gtt_start, + args->gtt_end); + + return 0; +} + +static void +i915_gem_evict_object(struct drm_device *dev, struct drm_gem_object *obj) +{ + +} + +static int +evict_callback(struct drm_memrange_node *node, void *data) +{ + struct drm_device *dev = data; + struct drm_gem_object *obj = node->private; + struct drm_i915_gem_object *obj_priv = obj->driver_private; + + if (obj_priv->pin_count == 0) + i915_gem_evict_object(dev, obj); + + return 0; +} + +int +i915_gem_execbuffer(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + drm_i915_private_t *dev_priv = dev->dev_private; + struct drm_i915_gem_execbuffer *args = data; + struct drm_i915_gem_validate_entry *validate_list; + int ret, i; + RING_LOCALS; + + LOCK_TEST_WITH_RETURN(dev, file_priv); + + /* Big hammer: flush and idle the hardware so we can map things in/out. + */ + BEGIN_LP_RING(2); + OUT_RING(CMD_MI_FLUSH | MI_READ_FLUSH | MI_EXE_FLUSH); + OUT_RING(0); /* noop */ + ADVANCE_LP_RING(); + ret = i915_quiescent(dev); + if (ret != 0) + return ret; + + /* Evict everything so we have space for sure. */ + drm_memrange_for_each(&dev_priv->mm.gtt_space, evict_callback); + + /* Copy in the validate list from userland */ + validate_list = drm_calloc(sizeof(*validate_list), args->buffer_count, + DRM_MEM_DRIVER); + ret = copy_from_user(validate_list, + (struct drm_i915_relocation_entry __user*) + args->buffers, + sizeof(*validate_list) * args->buffer_count); + if (ret != 0) { + drm_free(validate_list, + sizeof(*validate_list) * args->buffer_count, + DRM_MEM_DRIVER); + return ret; + } + + /* Perform the relocations */ + for (i = 0; i < args->buffer_count; i++) { + intel_gem_reloc_and_validate_buffer(dev, &validate_list[i]); + } + + /* Exec the batchbuffer */ + + + drm_free(validate_list, sizeof(*validate_list) * args->buffer_count, + DRM_MEM_DRIVER); + + return 0; +} + +int i915_gem_init_object(struct drm_device *dev, struct drm_gem_object *obj) +{ + struct drm_i915_gem_object *obj_priv; + + obj_priv = drm_calloc(1, sizeof(*obj_priv), DRM_MEM_DRIVER); + if (obj_priv == NULL) + return -ENOMEM; + + obj->driver_private = obj_priv; + + return 0; +} + +void i915_gem_free_object(struct drm_device *dev, struct drm_gem_object *obj) +{ + drm_free(obj->driver_private, 1, DRM_MEM_DRIVER); +} + |